TY  - JOUR
AU  - E. S. Levitin
TI  - On a distance estimate and the form of a tangent cone to the graph
JO  - Doklady Akademii Nauk
PY  - 1996
SP  - 14
EP  - 18
VL  - 350
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1996_350_1_a3/
LA  - ru
ID  - DAN_1996_350_1_a3
ER  -